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Vulnerability Details : CVE-2021-33560

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.
Publish Date : 2021-06-08 Last Update Date : 2022-07-25
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 203

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:4409: libgcrypt security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20214409 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-33560

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
4 Application Gnupg Libgcrypt * * * * Version Details Vulnerabilities
5 Application Oracle Communications Cloud Native Core Binding Support Function 1.11.0 * * * Version Details Vulnerabilities
6 Application Oracle Communications Cloud Native Core Network Function Cloud Native Environment 1.9.0 * * * Version Details Vulnerabilities
7 Application Oracle Communications Cloud Native Core Network Function Cloud Native Environment 1.10.0 * * * Version Details Vulnerabilities
8 Application Oracle Communications Cloud Native Core Network Repository Function 1.14.0 * * * Version Details Vulnerabilities
9 Application Oracle Communications Cloud Native Core Network Repository Function 1.15.0 * * * Version Details Vulnerabilities
10 Application Oracle Communications Cloud Native Core Network Repository Function 1.15.1 * * * Version Details Vulnerabilities
11 Application Oracle Communications Cloud Native Core Network Slice Selection Function 1.8.0 * * * Version Details Vulnerabilities
12 Application Oracle Communications Cloud Native Core Service Communication Proxy 1.15.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Fedoraproject Fedora 2
Gnupg Libgcrypt 1
Oracle Communications Cloud Native Core Binding Support Function 1
Oracle Communications Cloud Native Core Network Function Cloud Native Environment 2
Oracle Communications Cloud Native Core Network Repository Function 3
Oracle Communications Cloud Native Core Network Slice Selection Function 1
Oracle Communications Cloud Native Core Service Communication Proxy 1

- References For CVE-2021-33560

https://dev.gnupg.org/T5328
https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpujul2022.html
N/A N/A
https://dev.gnupg.org/T5466
https://lists.fedoraproject.org/archives/list/[email protected]/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/
FEDORA FEDORA-2021-24d4e06195
https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html
MLIST [debian-lts-announce] 20210624 [SECURITY] [DLA 2691-1] libgcrypt20 security update
https://dev.gnupg.org/T5305
https://www.oracle.com/security-alerts/cpuapr2022.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/
FEDORA FEDORA-2021-31fdc84207
https://www.oracle.com/security-alerts/cpuoct2021.html

- Metasploit Modules Related To CVE-2021-33560

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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